10211200487909 has 2 divisors, whose sum is σ = 10211200487910. Its totient is φ = 10211200487908.

The previous prime is 10211200487899. The next prime is 10211200487923. The reversal of 10211200487909 is 90978400211201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8819088393025 + 1392112094884 = 2969695^2 + 1179878^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211200487909 - 2¹⁶ = 10211200422373 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10211200487909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211205487909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105600243954 + 5105600243955.

It is an arithmetic number, because the mean of its divisors is an integer number (5105600243955).

Almost surely, 2^{10211200487909} is an apocalyptic number.

It is an amenable number.

10211200487909 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211200487909 is an equidigital number, since it uses as much as digits as its factorization.

10211200487909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 10211200487909 in words is "ten trillion, two hundred eleven billion, two hundred million, four hundred eighty-seven thousand, nine hundred nine".